228206748 has 144 divisors (see below), whose sum is σ = 688649472. Its totient is φ = 57139200.

The previous prime is 228206729. The next prime is 228206767. The reversal of 228206748 is 847602822.

It is an interprime number because it is at equal distance from previous prime (228206729) and next prime (228206767).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 887836 + ... + 888092.

It is an arithmetic number, because the mean of its divisors is an integer number (4782288).

Almost surely, 2^228206748 is an apocalyptic number.

228206748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228206748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344324736).

228206748 is an abundant number, since it is smaller than the sum of its proper divisors (460442724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228206748 is a wasteful number, since it uses less digits than its factorization.

228206748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 228206748 is about 15106.5134296435. The cubic root of 228206748 is about 611.0960746738.

The spelling of 228206748 in words is "two hundred twenty-eight million, two hundred six thousand, seven hundred forty-eight".